Erratum: Not all moderate disease is the same – Identification of disability trajectories among patients with rheumatoid arthritis and moderate disease activity(PLoS ONE (2019) 14:5 (e0215999) DOI: 10.1371/journal.pone.0215999)

Abstract

In the ‘Trajectory group characteristics’ subsection of the Results, there is an error in the fourth sentence. The correct sentence is: There was no significant relationship between increasing HAQ trajectory group and death during follow-up, but some higher trajectory groups had greater proportion of patients who started a biologic (see S1 Table). There are several errors in S1 Table. Please view the correct S1 Table below. Supporting information S1 Table. Outcomes over follow-up, stratified by trajectory group. † Hazard ratios calculated using Cox regression adjusted for age and gender. ‡ Group 2 chosen as reference category for biologic switching analysis, as group 1 only had one failure event, and this resulted in failures of the proportional hazards assumption. The proportional hazards assumption was met when group 2 was used as the reference category. CI = confidence interval bDMARD = biologic disease modifying anti-rheumatic drug.